Sats per share (and coins per share), explained

A treasury company will happily tell you it holds more coin than ever before. That headline is almost meaningless on its own, because a company can grow its total coin pile simply by selling more shares — leaving each existing owner with exactly the same slice they started with. The number that cannot be gamed that way is coins per share: how much crypto actually backs a single share. For Bitcoin treasuries it’s usually quoted as sats per share.

A satoshi— “sat” for short — is the smallest unit of Bitcoin. One Bitcoin is 100 million satoshis, the same way one dollar is 100 cents. Because a single share of a treasury company is backed by a tiny fraction of a coin, measuring in whole Bitcoin gives you an unreadable string of decimals. Satoshis turn that fraction into a clean, growing whole number you can track quarter to quarter.

The same idea applies to Ethereum and Solana treasuries — there it’s just coins per share, since those coins don’t have a popular sub-unit name. The principle is identical: it’s the amount of the asset standing behind each share.

The math is a single division: take every coin the company holds and spread it across every share that exists.

For Bitcoin, multiply the result by 100 million to express it in satoshis. Say a company holds 10,000 BTC against 50 million shares:

One detail does the heavy lifting here: use the fully dilutedshare count, not just the shares trading today. A company with a large pile of convertible notes or stock options has shares waiting in the wings that will land on existing owners if those convert. Counting only today’s shares flatters the figure and hides dilution that’s already been promised away. For how that funding builds up, see how treasury companies fund their buys.

Sats per share is most useful as a line over time, not a single snapshot. What you want to see is the number climbing — proof that management is adding coin faster than it’s adding shares.

• Rising: every existing share now owns more coin than it did last quarter. This is the engine working — the company is raising money and converting it into coin at terms that benefit owners.
• Flat:the company may be growing its coin pile and its share count in lockstep. It’s getting bigger without making existing owners any richer per share.
• Falling: shares are being created faster than coin is being added — usually a sign of issuing stock at or below the value of the coins behind it. Each share is a thinner slice than before.

• It ignores debt. Coins per share counts the coins but not the borrowings used to buy them. Two companies can show the same sats per share while one owns its coins outright and the other owes a fortune against them.
• It depends on an honest share count.If the convertible notes and options aren’t counted, the figure is too rosy. Always check it’s built on the fully diluted number.
• It says nothing about price.Sats per share can rise while the stock falls, if the coin’s price drops further. It measures accumulation, not whether you’re in profit — pair it with cost basis and the premium the stock trades at for the full picture.

Use sats per share to judge management, not the market. A team that steadily grows coin per share is using its access to capital well — issuing stock when the premium is rich and turning the proceeds into more coin for every owner. A team whose coins-per-share is flat or falling is growing the company’s footprint without growing your stake, however impressive the total-coin headline looks.

It’s the single best one-number test of whether a treasury company is compounding for shareholders or just for itself. Read it alongside the funding mix and the premium, and the headline coin count stops being able to fool you.